Suddenly my Time Machine back-ups stopped. A pop up states that the Time Machine can't back up because it is already in use. Any ideas? Should I reset the Time Machine?
This is just standard Lion and Mountain Lion.
Unplug the TC power cord.. count to 10.. plug it back in.
If you have issues still. Power off and on again the computer.
See C12. http://pondini.org/TM/Troubleshooting.html
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